(Elaine arrives at the gas station and waits.)
Elain: Why am I always waiting? If I'm late for work, the boss will be really ticked off!
(there's an open gas pump for Elaine)
Attendant: How much would you like, ma'am?
Elain: Fill'er up, ASAP! I'm late, and my car's low on gas.
Attendant: Sure, ma'am. But where's your gas cap?
Elain: Don't YOU know? You're the gas pumper!
Attendant: Lady, the PC term is petroleum chemical engineer, thank you.
Elain: I should have known that?